Smart contact lenses and the appropriate software. It would be the ultimate AR experience. I have no idea how to produce them, as they would need to be super high resolution, lag free, completely wirelessly powered and connected, safe to use and to wear and useable 24/7.
My current concept is a ultrabook sized block that can be taken around in a backpack.
Oh and wireless handoff ...
meaning everything I grab and throw in your general direction becomes available to you, kind off like they do it in Avatar. This should also work with PCs, tablet and everything else.
Speaking of grabbing you would also need some kind of minority report glove so every bit of hand movement can be tracked precisely. But probably a bit more elegant meaning only small stickers on the back of your hand.
Did I mention that sharing stuff should enable working together on the same object in real-time?
Also this system should integrate seamlessly with a smart environment, meaning looking at the light, opening its context menu and changing its brightness or colour should be no effort at all.
And of course all of it should be open source, highly scalable and either hosted on public infrastructure (funded by taxes or smt) or by each individual for himself to protect his or her privacy.
So who is with me?